# Dictionary

| Term        | Description                                                                                            |
| ----------- | ------------------------------------------------------------------------------------------------------ |
| `User`      | A person that wants to use the BankID ID-Card solution to identify them self.                          |
| `Merchant`  | The entity that uses the ID-Card service to validate a `User`.                                         |
| `SessionId` | An uniq id of an identification session.   It is one-time use and used in ID-Card API to get user data |